java - extracting lead information from a mail using regex -

i developing mail retriever retrieving needed mails , further extracting details mails using regex. have extract name, requirement etc. details following mail. how regex?? please me this. in advance.

lead details  caller name: mr rahul rajouri garden  caller requirement: money exchangers  caller phone: +918459761134  caller email: rchand.rahul@gmail.com  call date & time: tue, 18 jun 2013 14:40:38  branch info: rajouri garden  city: delhi  

try this, can take input file.

public class test { public static void main(string[] args) {     string data = " lead details\n" +             "caller name: mr rahul rajouri garden\n" +             "caller requirement: money exchangers\n" +             "caller phone: +918459761134\n" +             "caller email: rchand.rahul@gmail.com\n" +             "call date & time: tue, 18 jun 2013 14:40:38\n" +             "branch info: rajouri garden\n" +             "city: delhi";      string[] substr=data.split("\n");      (string i:substr){         if(i.contains("caller name")){             system.out.println("caller name: "+i.split(":")[1]);         }if(i.contains("caller requirement")){             system.out.println("caller requirement: "+i.split(":")[1]);         }if(i.contains("caller phone")){             system.out.println("caller phone: "+i.split(":")[1]);         }if(i.contains("caller email")){             system.out.println("caller email: "+i.split(":")[1]);         }if(i.contains("call date & time")){             system.out.println("call date & time: "+i.split(":")[1]);         }if(i.contains("branch info")){             system.out.println("branch info: "+i.split(":")[1]);         }if(i.contains("city")){             system.out.println("city: "+i.split(":")[1]);         }     } }  }